Sky distribution of the GUViCS galaxies with a recessional velocity vel ≤ 3500 km s^-1. Red, green, and blue symbols are for galaxies located in the red sequence, green valley, and blue cloud, respectively (see Sect. 5). The size of the symbols is proportional to the stellar mass of the galaxies: big symbols are for galaxies with M_star> 10^9.5M_⊙, medium symbols for objects with 10^8.5<M_star ≤ 10^9.5M_⊙, and small symbols for M_star ≤ 10^8.5M_⊙. The red and blue dashed circles show the identified substructures used in the following analysis. The field is defined as composed by all the galaxies located outside the blue dashed circle and not belonging to any other structure. Light grey indicate shallow (exposure time <800 s) NUV GALEX fields; dark grey are deep fields (exposure time >800 s). The footprint of the VCC is shown by the black dashed line, NGVS by the yellow solid line, and HeViCS by the cyan solid line. The black contours indicate the X-ray diffuse emission of the cluster from Böhringer et al. (1994).